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jadekelllly
 2 years ago
solve cos(2x4)=sin(6x)
jadekelllly
 2 years ago
solve cos(2x4)=sin(6x)

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jadekelllly
 2 years ago
Best ResponseYou've already chosen the best response.0i have no clue, im doing the work sheet and that is all it says for this question

jadekelllly
 2 years ago
Best ResponseYou've already chosen the best response.0it says solve for x

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0remember complimentary angles

jadekelllly
 2 years ago
Best ResponseYou've already chosen the best response.0the answer choices are 20, 11, 10.75, or 11.75

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0forget your answers, understand concept

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0if just in the 1st quadrant. u can use the identity : cosx = sin(90x) cos(2x4)=sin(6x) sin(90(2x4))=sin(6x) 90(2x4) = 6x solve for x the result would be same like @dan817 said :)

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0oppss 815 not 817, hihi :)

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0do u see how complimentary angles work now

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0in a right angled triangle the 2 other angles must add up to 90

jadekelllly
 2 years ago
Best ResponseYou've already chosen the best response.0Im really slow at picking up these concepts.....:/ so this im reallly lost..

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0hmm how else can i explain it

jadekelllly
 2 years ago
Best ResponseYou've already chosen the best response.0btw i really appriciate the help you guysss!!

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0no lets do it between 4 to pi+4 for 1 interval of your cos(2x4)

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0hmmm.. for easier, solve this algebrically :) can u solve for x, this part : dw:1371574314002:dw

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0first solve an x that works and ill show u how u can find all the other xs that work

Vitas
 2 years ago
Best ResponseYou've already chosen the best response.0cos(2x4)=cos(906x) a)2x4=906x+360k b)2x4=6x90+360k a)x=94/8+45k b)x=86/4+90k
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